Select the option that can be used as a one-word substitute for the given group of words.

Someone working or acting merely for money or other rewards

Mercenary

The option that can be used as a one-word substitute for the given group of words "someone working or acting merely for money or other rewards" is mercenary.

• Debtor is a person who owes money to someone else.
• Contractor is a person who is hired to do a specific job for a fee.
• Player can refer to a person who participates in a game or sport.

A mercenary is a soldier who fights for money, not for patriotism or ideology. Mercenaries are often seen as being motivated by greed and self-interest.